Boeing Roundup: Alaska Air to replace Airbus planes with Boeing aircraft… GE Aviation misses target for Leap enginesChicago Business JournalGeneral Electric Aviation, the GE unit that makes the Leap engines powering Boeing’s new 737 Max, says it had a good first half on the engine production front. GE said it delivered 93 Leap engines in the second quarter, below its forecast of 100 but up …